<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

</body>
<script src="https://cdn.bootcdn.net/ajax/libs/dayjs/1.4.1/dayjs.min.js"></script>
<script>
    let today = dayjs().format('YYYY-MM-DD HH:mm:ss');

</script>
</html>
